You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
47 lines
1017 B
C
47 lines
1017 B
C
22 years ago
|
#include "fmt.h"
|
||
|
|
#include "textcode.h"
|
||
|
|
#include "str.h"
|
||
|
|
#include "haveinline.h"
|
||
|
|
|
||
|
|
unsigned long fmt_cescape(char* dest,const char* src,unsigned long len) {
|
||
|
|
register const unsigned char* s=(const unsigned char*) src;
|
||
|
|
unsigned long written=0,i;
|
||
|
|
char c;
|
||
|
|
for (i=0; i<len; ++i) {
|
||
|
|
switch (s[i]) {
|
||
|
|
case '\a': c='a'; goto doescape;
|
||
|
|
case '\b': c='b'; goto doescape;
|
||
|
|
case '\e': c='e'; goto doescape;
|
||
|
|
case '\f': c='f'; goto doescape;
|
||
|
|
case '\n': c='n'; goto doescape;
|
||
|
|
case '\r': c='r'; goto doescape;
|
||
|
|
case '\t': c='t'; goto doescape;
|
||
|
|
case '\v': c='v'; goto doescape;
|
||
|
|
case '\\':
|
||
|
|
c='\\';
|
||
|
|
doescape:
|
||
|
|
if (dest) {
|
||
|
|
dest[written]='\\';
|
||
|
|
dest[written+1]=c;
|
||
|
|
}
|
||
|
|
written+=2;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
if (s[i]<' ') {
|
||
|
|
if (dest) {
|
||
|
|
dest[written]='\\';
|
||
|
|
dest[written+1]='x';
|
||
|
|
dest[written+2]=fmt_tohex(s[i]>>4);
|
||
|
|
dest[written+3]=fmt_tohex(s[i]&0xf);
|
||
|
|
}
|
||
|
|
written+=4;
|
||
|
|
} else {
|
||
|
|
if (dest) dest[written]=s[i];
|
||
|
|
++written;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return written;
|
||
|
|
}
|